Paper-making apparatus



Sept. 6, 1932. w. c. TROTMAN 1,875,525

PAPER MAKiNG APPARATUS Filed Jan. 14, 1932 I N VEN TOR.

BY M 4 /2,.

A TTORNEY.

Patented Sept. 6, 1932 UNITED" STATES PATENT: OFFICE.

WALTER G. TROTMAN, OF WEST SPRINGFIELD, MASSACHUSETTS i PAPER-MAKINGAPPARATUS Application filed January 14, 1932. Serial No. 586,579.

This invention relates to paper-making apparatus and is directed moreparticularly to improvements in dandy rolls .andsupporting mechanismtherefor.

One object of the invention is the provision of a dandy roll whichisopen from end to end and another object is the provision of novelsupporting means therefor whereby the dandy roll may contact withpaper-making material carried by Fourdrinier wire and which is soconstructed and arranged that the dandy roll may be quickly moved intoand out of contact with the paper-making material.

According to one feature of the invention the dandy roll is open fromendto end so that pipes may extend therethrough for steam and water pipesto facilitate cleaning of the roll. As distinguished from-the prior artsuch a structure is an advantage over the prior art. Where a dandy rollis mounted on journals disposed on the axis of rotation of the roll, itis possible to extend but one pipe through the journal of the roll, andit is desirable to employ steam and water for cleaning the roll.

According to another feature of the invention the novel supportingmechanism for the roll is not only adapted to accommodate itself torolls of various diameters, but the mechanism is adjustable up i anddown so that a dandy roll may contact with various degrees of pressurewith a Fourdrinier wire while at the same time the supporting structureis so made that the support for theroll may be instantly raised orlowered to carry the roll towards and away from the Fourdrinier wire.

Various novel features and advantages of the invention will be morefully hereinafter referred to in connection with the accompanyingdescription of the preferred form of the invention taken in connectionwith the accompaying drawing wherein:

Fig. 1 is a side elevational view of a dandyroll supporting mechanism ofthe invention r shown in association. with certain parts of apaper-making machine.

Fig. 2 is a transverse sectional elevational view at one end of themechanism, and

Fig. 3 is a plan View at a small scale taken on the line 33 of Fig. 1.

Referring now to the drawing more in detail the invention will be fullydescribed.

There is represented at R in Fig. 1 one of a pair of side rails of thepaper-making machine such as are ordinarily used in association with theother parts of a paper-making machine. B represents the upper run of a Fourdrinier as it extends from end to end of the machine. In this casethe wire B is supported by rollers 2 suitably associated with the railsR. It will be understood that the rail shown in Fig. 1 is similar to arail on the further side of the machine. Brackets such as 8 are carriedby each rail and threaded rods 10 are reciprocable up and down "inbearings 12 thereof at its upper and lower sides.

Cam members 14 freely rotatable on the rods 10 are arranged so that thesaid rods may slide therethrough. The cams 14L bear upon lower portions16 of the bracket 8. Cams 18 are carried by the members 14 and arearranged to ride up on the parts 16 as the members 14 are rotated.

Adjusting members 20 in the form of nuts are in threaded engagement withthe rods 10 and rest on the upper sides of the members 14. As they arerotated in one direction or the otherthey move the rods 10 up and down.

There is one bracket such as 8 on each of the side rails R- at oppositesides of the machine which have associated therewith the members 1 1 and20 and the rods 10. It will be seen that the rods-may be independentlyadjustable up and down so that a dandy roll 50 supported thereby may beadjusted. in various ways with reference to the Fourdrinier wire B.

Yokes 30 such as shown in Fig. 1 are carried by the upper ends of therods 10 and have rollers 32 journalled for rotation therein. Arms 34 areadjustable by means of clamp screws 36 at opposite ends of the yokes andthese carry rollers 38 which may be similar to the rollers 32 justdescribed.

The dandy roll 50 may have end flanges or head members 52 which areprovided with peripheral grooves or channels 54 for receiving therollers 32 and 38. By means of these rollers the dandy roll is supportedfor rotation and it is held againstappreciable axial 51 the Fourdrinierwire travels thereunder carrying the paper-making material thereon thedandy roll may bear on the material and cause it to rotate for its usualfunction.

As will be seen in Fi 1 the dandy roll 50 isopen ended so that pipessuch as and 62 indicated by dotted lines may extend therethrough. Thesepipes may consist of a water pipe, steam pipe or the like so that waterand stean'i may be used for cleaning the dandy roll. vAccess may be hadto the interior of the roll at all times which is advantageous in the,operation of the papermaking machine.

The cam members 14 on either side of the machine are associated with thebrackets 8 carried by the rails and are connected for simultaneousosciliationas wi l be described in connection with Fig. 3.

Arms may extend from the cam members let and have their outer endsconnected by a connecting rod indicatedby 72. One of the cams 14 such asthe one at the right may be provided with an operating lever 74; so thatby swinging the oerating lever 7d the cams are oscillated. By beingconnected by the lock 72 and levers 70 an oscillation of one cam causesan oscillation of the other. In this way the earns 18 of the members 14are brought into engagement with the portions 16 or" the brackets atopposite sides or" the machine and in that way they simultaneouslyelevate the rods 10 and move both ends of the dandy roll upwardly.

From the foregoing it will be seen that the supporting means for thedandy roll is adjustable for rotatably of difl crent diameters. Thesupporting structure at opposite sides is independently adjustable toraise and lower the ends of the dandy roils independently while othermeans are provided for simultaneously elevating or lowering the wholestructure so that the dandy rolls n ay be instantly moved towards andaway from the Fourdrinier wire.

Having described the invention in the form at present preferred, what Inow desire to claim and secure by Letters Patent of the United Statesis:

1. In a paper-making apparatus, means for rotatably supporting oppositeends of a dandy roll including means associated therewith forindependently moving opposite ends of said dandy roll up and down andmeans for simultaneously moving the supports at opposite ends of thedandy roll up and down.

2. A structure for supporting a dandy roll above a Fourdrinier wirecomprising in combination, spaced yokes havingdandy rollers journalledtherein, a dandy roll having grooves at opposite ends receiving saidsupporting dandy rolls rollers, stems for said yokes having means forindependently moving said stems up and down and other means operativelyconnected for simultaneously moving both of said stems.

3. A structure for supporting a dandy roll above a Fourdrinier wirecomprising in combination, yokes including members pivoted thereto,dandy rollers ournalled therein, the said pivoted members being arrangedfor adjustment whereby rolls of different diameters may be supported bysaid yokes, a dandy roll having grooves at opposite ends thereofreceiving said rollers, threaded rods supporting said yokes andadjusting nuts thereon, cam members supporting said nuts and thereby.supporting the rods, brackets in which said rods are guided and meansconnecting said cam members whereby they are simultaneously operated toraise and lower said rods.

4. A structure for supporting a dandy roll above'a Fourdrinier wirecomprising in combination, spaced brackets, threaded rods reciprocableup and down therein having nuts thereon, cam members supporting saidnuts which are free to rotate on said rods and having parts for abuttingportions of said brackets to raise said nuts as they are rotated, yokeson the upper ends of said rods having rollers for supporting a dandyroll and a dandy roll having peripheral grooves for receiving saidrollers.

5. A structure for supporting a dandy roll above a Fourdrinier wirecomprising in combination, spaced brackets having threaded rodsreciprocable up and down therein, nuts on said rods, cam memberssupporting said nuts bearing on said brackets which are rotatable onsaid rods having parts for hearing on portions of said brackets to raisesaid nuts as they are rotated, yokes on the upper ends of said rodshaving rollers for supporting a dandy roll, a dandy roll havingperipheral grooves for receiving said rollers, link connectionsbetween'said cams whereby they are operated simultaneously and anoperating lever associated with one of said cams.

' In testimony whereof I affix my signature.

WALTER G. TROTMAN.

